A 25-year-old man presents to the ED febrile, lethargic, and with a stiff neck. After taking a history and performing a physical exam, you strongly suspect meningitis. In order to verify your diagnosis and to find the causative agent, you perform a lumbar puncture. Laboratory analysis confirms your suspicion by showing bacterial growth in the cerebrospinal fluid (CSF). You administer the appropriate therapy, and the patient recovers without complication.